Question

java 在类 中找不到主方法, 请将主方法定义为: public static void main(System.args[]) 是怎么回事？

public class Teacher{
private String name;
private int id;
private int age;
public String getName(){
return name;}
public int getId(){
return id;}
public int getAge(){
return age;}
public void setName(String teaName){
name=teaName;}
public void setId(int teaId){
id=teaId;}
public void setAge(int teaAge){
age=teaAge;}
public Teacher(String nname,int iid,int aage){
name=nname;id=iid;age=aage;}
Teacher(){
name="张三";
id=456;
age=18;}
}
class TeacherTest{
public static void main(String args[]){
Teacher s1=new Teacher("李四",123,20);
Teacher s2=new Teacher();
System.out.println("姓名:"+s1.getName()+"学号："+s1.getId()+"年龄："+s1.getAge());
System.out.println("姓名:"+s2.getName()+"学号："+s2.getId()+"年龄："+s2.getAge());
}
}

Answer 1

main 方法只能在public class中